Moving picture reel



y L B. GOLDBERG ET AL I 1,358,586

' mov me PICTURE REEL Filed Oct. 20. 19:50

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Patented May 17, v

UNITED STATES PATENT. OFFICE LOUIS B. GOLDBERG, GOLDBERG, WILLIAMGOLDBERG, AND JACOB I. GOLDBERG, OF DENVER, COLORADO uov'me rrc'runnmnApplication filed mm- 20, 1930. Serial no. 489,844.

This invention relates to improvements in moving picture reels.

It is the object of this invention to produce a moving picture reel ofgreat strength and rigidity, which is made of two parts and securedtogether with means that holds the parts in adjusted position and whichprevents relative rotation of the parts when they are assembled.

The above and other objects that may be come apparent as thisdescription proceeds are attained by means of a construction and anarrangement of parts that will now be described in detail, and for thispurpose reference will be had to the accompanying drawings in which theinvention has been illustrated, and in which:

Fig. 1 is a side elevation of the improved reel' m Fig. 2 is a viewshowing the reel as it appears from a point lying in itsplane ofrotation Fig. 3 is a view taken on line 3- 3, Fig. 2, and shows theinner surface of the center portion of one of the reel members;

' Fig. 4 is a section taken on line 4-4, Fig. 3, and shows the means forconnecting the twoparts of. the reel, and r Fig. 5 is a plan view ofthe'spacing memher employed in the assembly of the reel.

In the drawings reference numerals 1 indicate the two parts of the reelassembly, which parts are identical, each consisting of a circular rim 2and a circular central por- 5 tion 3 connected by radial spokes 4. The

. central portion is provided with'a circular depression 5 that isconcentric with rim 2'. Each of the parts 1 are also provided with acircular flange 6 that extends inwardly the direction of the depression5 and which are adaptedto fit one a ainst theother in the manner shownin Flgs. 2 and 4. The depth of the depression 5 is such that the bottomwalls thereof, which have been indicated by reference numeral 7, do notcome in condrical surface.

vided on their inner surfaces .with recesses 9,

and are also provided with an opening 10 corresponding to. each of therecesses. In the drawing the recesses have been shown as formed byprojecting flan es 11 that extend beyond the surface of wal 7, but theymay be formed by making depressions in the surface or in any othersuitable way.

For the purpose of holding the two parts of the reel in assembledposition, a spacer has been provided. This spacer has been shown in planview in Fig. 5, .and has been designated in its entirety by referencenumeral 12. The specific embodiment of the spacer, illustrated in thedrawing, comprises a triangular member .13 havin a central hub 14extending from each of its opposite sides. At each 7 B5 corner of thetriangular part 13 and on each side thereof is a circular-"projection 15that is adapted to fit into a recess 9 in the manner shown in'Fig. 4. Ateach corner of member 13 an opening 16 is provided, which openingsregister with openings 10 was to form passageways for the clamping bolts17 that ex 'tend through the two reel members and ghrough the spacer inthe manner shown in i 4. wh inthe bolts 17 are tightened the edges offlanges 6 will be forced into contact with each other, after which thecentral portions of the members will yield slightly so as to come intocontact-with the ends of the circular projections 15. Since the circularprojections 15' are designed to fit snugly into the recesses 9, theyresist any force tending to rotate mem bers 1 relative to each otherandthereby remove any such strains from the clamping bolts. Anotherfunction of projections 15 and recesses 9 is to properly center theparts so that the outer surfaces of flanges 6 will automatically bebrought into the same cylin- The parts are so proportioned that 75 Inthe illustration shown on the drawings and described above theinterconnecting means for preventing relative rotation-between the twomembers of the reel has been shown as comprising the recesses 9 and thelugs 15, but it is to be understood that other and of exactly the samediameter. Flanges 6 are also provided with cuts 18 that serve as meansfor attaching the end of the film to the reel and which also preventsstrains due to temperature changes.

Having described the invention what is claimed as new is: 1. A motionpicture reel consisting of two similarly sha ed members each having acircular rim an a circular center portion connected by a pluralit ofradial spokes, the center ortion of eac member having a circular ange ofuniform width adapted to coact with the flange of the other member toform a cylindrical surface extending between the two members and whichforms the central surface of the spool, and means for interconnectingthe members, said means comprising a spacer provided with holes for thereception of-clamping bolts, the two spaced members having correspondingholes-for the, reception of the bolts, the surfaces of the spacer andthe surfaces of the two members having interlocking means to positivelyposition the several parts and to hold them against relative rotarymotion.

2. In a moving picture reel composed of two substantially identical;circular members each of which has a circular rim and a central circularportion connected by meansv tion of clamping bolts and with inte ofspokes, one sideof the central each having a circular flange o uniform.width that is adapted to cooperate with' the corresponding flange ontheother to form a cylindrical surface, the central portion .of eachmember having its center ofi'set into the space bounded by the circularfiange, means for holding the two members in assembled position and forinterlocking them against relative rotation, saidv means comprising aspacer located between the adjacent surfaces of the members, the spacerand the members being provided with openings for the recep- 11g latchingmeans for holding the parts'm predetermined ition. I

3. A movm picture reel comprising two substantially Identical parts eachhaving a rtion of circular rim and a central ortion rovided on one sidewith a circular ange o uniform width, a spacer located between the twoparts within the splace enclosed by the flanges, the spacer and t e twoparts of the reel having 0 registeringjoopenin s for the reception ofclamping lts ang means for interlocking the spacer and the two reelparts for holding them in a predetermined relative rotary positionindependently of the clamping bolts and the flanges.

In. testimony whereof we aflix our signa- LOUIS B. GOLDBERG. NATHANGOLDBERG. WILLIAM GOLDBERG. JACOB M.' GOLDBERG.

- tures.

